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https://github.com/projectacrn/acrn-hypervisor.git
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10ec896f99
To shadow guest EPT, the hypervisor needs construct a shadow EPT for each
guest EPT. The key to associate a shadow EPT and a guest EPT is the EPTP
(EPT pointer). This patch provides following structure to do the association.
struct nept_desc {
/*
* A shadow EPTP.
* The format is same with 'EPT pointer' in VMCS.
* Its PML4 address field is a HVA of the hypervisor.
*/
uint64_t shadow_eptp;
/*
* An guest EPTP configured by L1 VM.
* The format is same with 'EPT pointer' in VMCS.
* Its PML4 address field is a GPA of the L1 VM.
*/
uint64_t guest_eptp;
uint32_t ref_count;
};
Due to lack of dynamic memory allocation of the hypervisor, a array
nept_bucket of type 'struct nept_desc' is introduced to store those
association information. A guest EPT might be shared between different
L2 vCPUs, so this patch provides several functions to handle the
reference of the structure.
Interface get_shadow_eptp() also is introduced. To find the shadow EPTP
of a specified guest EPTP.
Tracked-On: #5923
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
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| .. | ||
| boot | ||
| configs | ||
| guest | ||
| lib | ||
| seed | ||
| cpu_caps.c | ||
| cpu_state_tbl.c | ||
| cpu.c | ||
| e820.c | ||
| exception.c | ||
| gdt.c | ||
| idt.S | ||
| init.c | ||
| ioapic.c | ||
| irq.c | ||
| Kconfig | ||
| lapic.c | ||
| mmu.c | ||
| nmi.c | ||
| notify.c | ||
| page.c | ||
| pagetable.c | ||
| platform_caps.c | ||
| pm.c | ||
| rdt.c | ||
| rtcm.c | ||
| sched.S | ||
| security.c | ||
| sgx.c | ||
| trampoline.c | ||
| tsc_deadline_timer.c | ||
| tsc.c | ||
| vmx.c | ||
| vtd.c | ||
| wakeup.S | ||